Channagoudar, Savita, and Dr Srikanta Murthy k. “Efficient Feature Extraction for Face Recognition With Combined Method of PCA and GMM”. International Journal of Engineering and Technology 7, no. 3.34 (September 1, 2018): 766–769. Accessed August 17, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/19471.